The correct answer is: Option A. An emphasis on death and decay.
Gothic literature is known for containing elements of horror and romance, as well as the presence of supernatural beings.
Regarding the excerpt, the speaker refers to a body in its decaying state - which inherently references death -, and how pleasing this scene is for them. Acknowledging the rest of the piece, the supernatural state of Frankenstein's monster can be taken in account to further evidence the gothic nature of this example.